CN116075339A

CN116075339A - Fire-fighting equipment, battery pack, energy storage system and electric automobile

Info

Publication number: CN116075339A
Application number: CN202180005377.4A
Authority: CN
Inventors: 刘宗哲; 钟正; 乐斌; 陈诚; 张业正; 林泽舜
Original assignee: Huawei Digital Power Technologies Co Ltd
Current assignee: Huawei Digital Power Technologies Co Ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2023-05-05
Also published as: EP4356980A1; WO2023024040A1

Abstract

Fire control equipment, battery package, energy storage system and electric automobile relate to the energy field for solve fire extinguisher suitability low, and to the low problem of precision when putting out a fire to the battery package. The fire-fighting equipment (1) or the fire extinguisher comprises a first cavity (10), a second cavity (20) and a starting line (30). Fire extinguishing agent is stored in the first cavity (10), gas production agent is stored in the second cavity (20), and the starting line (30) stretches into the second cavity (20) to be in contact with the gas production agent. The second cavity (20) comprises a pressure relief opening (25), the pressure relief opening (25) is communicated with the first cavity (10) and is used for spraying gas in the second cavity (20) to the first cavity (10), and the second cavity (20) sprays gas in the second cavity into the first cavity (10) through the pressure relief opening (25). The first cavity (10) comprises a spraying opening (11), the spraying opening (11) is used for spraying the fire extinguishing agent in the first cavity (10) after gas generated after the gas generating agent is ignited enters the first cavity (10), and the first cavity (10) sprays the fire extinguishing agent in the first cavity through the spraying opening (11).

Description

Fire-fighting equipment, battery pack, energy storage system and electric automobile

Technical Field

The application relates to the field of energy, in particular to a fire-fighting equipment, a battery pack, an energy storage system and an electric automobile.

Background

In recent years, with the improvement of living standard and the enhancement of environmental protection consciousness, people are aware that energy sources are a very serious problem. In view of energy and environment, electric vehicles are rapidly developed, and pure electric vehicles are an important development direction of electric vehicles because of the fact that the pure electric vehicles can truly realize zero emission. The lithium ion battery becomes an ideal power source of a new generation of electric automobile by virtue of the excellent performance, has the advantages of light weight, large energy storage, high power, no pollution, no secondary pollution, long service life, small self-discharge coefficient and wide temperature application range, and is an ideal automobile storage battery for electric bicycles, electric motorcycles, electric cars, electric vans and the like.

At present, most of new energy vehicles adopt lithium ion batteries as energy storage devices, lithium ion battery packs are used as main components in battery energy storage systems in the field of energy, and if collision occurs, foreign matters invade a battery compartment or cause spontaneous ignition and explosion of the lithium ion batteries due to various reasons, so that serious safety problems can be brought.

Aiming at the problems, the scheme adopted by the current industry is centralized fire control, and a pipe network type fire extinguisher or a gas cylinder type fire extinguisher is adopted to extinguish the fire of the battery pack so as to extinguish the fire source rapidly and timely. However, in this way, firstly, the pipe network type fire extinguisher or the gas cylinder type fire extinguisher has limited application in the embedded lithium battery or the distributed scene due to the complex design and the need of periodic maintenance. Secondly, centralized fire control is not pertinence, and coverage area is great, leads to fire control medicament to cause the influence to peripheral equipment, and the reliability is lower.

Disclosure of Invention

The embodiment of the application provides a fire-fighting equipment, battery pack, energy storage system and electric automobile for solve the fire extinguisher suitability low, and to the low problem of precision when putting out a fire to the battery pack.

In order to achieve the above purpose, the present application adopts the following technical scheme:

in a first aspect of embodiments of the present application, a fire-fighting apparatus or fire extinguisher is provided. The fire-fighting equipment comprises a first cavity, a second cavity and a starting line. The first cavity is internally provided with a fire extinguishing agent, the second cavity is internally provided with a gas production agent, and the starting line stretches into the second cavity to be contacted with the gas production agent. The gas can be generated after the starting line ignites the gas-generating medicament in the second cavity in the working process of the fire-fighting equipment, the second cavity sprays the gas in the second cavity into the first cavity to increase the pressure of the first cavity, and the first cavity sprays the fire-fighting medicament in the second cavity. For example, the second cavity includes a pressure relief vent in communication with the first cavity for spraying gas in the second cavity to the first cavity. That is, the second cavity sprays the gas inside the second cavity into the first cavity through the pressure relief opening. The first cavity comprises a spraying opening, and the spraying opening is used for spraying the fire extinguishing agent in the first cavity after gas generated after the gas generating agent is ignited enters the first cavity. That is, the first chamber ejects the fire extinguishing agent therein through the ejection port.

The working principle of the fire-fighting equipment provided by the embodiment of the application is as follows: the starting line is used for igniting the gas-generating medicament, gas is generated after the starting line ignites the gas-generating medicament, and the air pressure in the second cavity is increased. The pressure relief vent is configured to rupture (e.g., from the first pressure relief membrane) upon ignition of the gas generant composition to eject gas in the second chamber to the first chamber. The air pressure in the first cavity is increased, and the spraying port is used for spraying the fire extinguishing agent (for example, spraying after the second pressure release film is broken or spraying after the pressure release valve is opened) in the first cavity after the air enters the first cavity so as to realize quick fire extinguishing. The fire-fighting equipment provided by the embodiment of the application is simple in working principle, simple in structure, free of periodic maintenance, low in requirement on application scenes, applicable to any scene and wide in application range.

In some embodiments, at least a portion of the second cavity is disposed within the first cavity, and the pressure relief vent is disposed within the first cavity. At least part of the second cavity is arranged in the first cavity, so that the occupied volume of the first cavity and the second cavity can be saved. And the pressure relief opening is arranged in the first cavity, a communication structure is not required to be arranged, and the communication between the pressure relief opening and the first cavity can be directly realized, so that the structure is simple.

In some embodiments, the pressure relief vent is a first pressure relief diaphragm. Simple structure, mature technology and convenient realization.

In some embodiments, the second cavity further comprises a first seal ring and a first connector; opposite two surfaces of the first sealing ring are respectively contacted with the first pressure release diaphragm and the second part; the first connecting piece is located one side of the first pressure release diaphragm, which is far away from the first sealing ring, and is fixedly connected with the second cavity. Simple structure, mature technology and convenient realization.

In some embodiments, a first seal is also disposed within the second cavity; the gas generating agent is positioned between the first sealing element and the first side wall of the second cavity, and the starting line extends into the second cavity from the second side wall of the second cavity, passes through the first sealing element and is in contact with the gas generating agent; the first side wall and the second side wall are arranged opposite to each other. The first sealing piece is arranged to seal the second cavity with the outside, so that the problems that the gas production medicament is damped and cannot be sprayed due to outside water vapor are avoided.

In some embodiments, the first sidewall of the second cavity is a pressure relief vent; the starting line stretches into the second cavity from the second side wall of the second cavity, and the first side wall and the second side wall are arranged oppositely. The pressure relief opening is arranged opposite to the starting line, and the starting line side provides thrust, so that generated gas can be sprayed to the first chamber as completely as possible. So that the pressure intensity of the first chamber is high when the pressure is released, and the spraying effect of the fire extinguishing agent is good.

In some embodiments, the second cavity is fixedly connected with the first cavity. Through with second cavity and first cavity fixed connection, can avoid the second cavity to rock to avoid leading to second cavity and first cavity internal pressure increase because of the second cavity rocks, and then lead to the fire control apparatus mistake to spout the problem of fire extinguishing agent.

In some embodiments, the fire apparatus further comprises a first mount; the first mounting seat is arranged outside the first cavity and fixedly connected with the first cavity; the second cavity extends out of the first cavity and is fixedly connected with the first mounting seat. The second cavity is fixedly connected with the first cavity through the first mounting seat, so that the structure is simple and the implementation is easy.

In some embodiments, the first mount is an open cavity structure; the opening of first mount pad is towards first cavity, and the second cavity stretches into first mount pad, and the start line passes the chamber bottom of first mount pad. Through setting up first mount pad into open cavity structure, first mount pad is connected with first cavity lock, and the cavity of first mount pad communicates with the through-hole on the first cavity for first mount pad constitutes a seal structure with first cavity. Therefore, compared with the first cavity which is annular, the first mounting seat is of an open cavity structure, and the first cavity and the second cavity can be further sealed.

In some embodiments, the first mount is on the same side of the first cavity as the firing port. Therefore, except that the first mounting seat is arranged and the gap is reserved on one side of the spraying opening, the first mounting seat cannot be contacted with the shell of the battery pack, other sides of the first chamber can be flexibly designed according to the shape of the battery pack, and the novel fire fighting equipment is simple in structure and convenient to install and place.

In some embodiments, the firing port is a pressure relief valve. Simple structure, mature technology and convenient realization.

In some embodiments, the fire-fighting equipment further comprises a second mount, the second mount being fixedly connected to the first cavity, and the pressure relief valve being fixedly connected to the second mount. The pressure release valve and the first chamber are fixedly connected by the second mounting seat, so that the structure is simple and the implementation is easy.

In some embodiments, the burst out port is a second pressure relief membrane. Simple structure, mature technology and convenient realization.

In some embodiments, the fire apparatus further comprises a second sealing ring and a second connector; opposite two surfaces of the second sealing ring are respectively contacted with the second pressure release diaphragm and the first cavity; the second connecting piece is located second pressure release diaphragm and keeps away from second sealing ring one side, with first cavity fixed connection. Simple structure, mature technology and convenient realization.

In some embodiments, the activation line comprises a heat sensitive line or an ignition head. Simple structure, mature technology and convenient realization.

In some embodiments, the activation line includes a heat sensitive line and an ignition head. Therefore, the fire-fighting equipment has the functions of active starting and passive starting, and once the passive starting control system fails, the thermosensitive wire capable of being actively started can also ensure the normal use of the fire-fighting equipment and ensure the performance of the fire-fighting equipment.

A second aspect of embodiments of the present application provides a battery pack comprising the fire-fighting equipment of any one of the first aspects and at least one electrical cell; the battery cell is used for supplying power; the fire-fighting equipment is used for spraying fire-extinguishing agent under the condition that the battery pack fires. According to the embodiment of the application, the fire-fighting equipment is arranged in the battery pack, and when the battery pack fires, the battery pack can be extinguished by the fire-fighting equipment in the battery pack. On the one hand, the fire-fighting equipment is directly packaged inside the battery pack, can extinguish fire from the battery pack, and has better fire-extinguishing effect. On the other hand, the fire-fighting equipment has strong pertinency, and only the battery pack to which the fire-fighting equipment belongs is used for extinguishing fire, so that the fire-fighting agent has less damage to other devices.

In some embodiments, the battery pack further comprises a detector; the detector is used for outputting a signal when the environment of the battery pack is abnormal. The detector can detect temperature, smog, gas, radiation intensity or liquid and the like in the battery pack so as to timely output signals when phenomena such as cell valve opening, liquid leakage, thermal runaway, BMU carbonization, wire harness and plastic structure combustion and the like occur, so that the fire-fighting equipment can rapidly and timely extinguish the fire of the battery pack.

In some embodiments, the battery pack further includes a battery management unit coupled to the initiation line in the fire apparatus for igniting the initiation line. The fire-fighting equipment is started through the battery management unit, and the device is simple in structure and easy to realize.

In a third aspect of embodiments of the present application, there is provided an energy storage system comprising: at least one battery pack, a control unit, and a flame detector; the control unit is respectively connected with the battery pack and the flame detector; the battery pack is the battery pack of any one of the second aspects; the control unit is used for controlling the starting of the flame detector when receiving the signal of the detector; the flame detector is used for outputting a signal to the control unit when the open flame is detected, and the control unit controls the starting line to ignite.

The energy storage system provided by the embodiment of the application comprises a battery pack with fire-fighting equipment, and after a detector in the fire-fighting equipment outputs a signal of abnormal environment of the battery pack, a control unit controls a flame detector to detect whether open fire exists. When the flame detector detects open fire, the control unit controls fire-fighting equipment in the battery pack with abnormal environment to start fire extinguishing. Because the signal of the abnormal environment of the battery pack is sent out by the battery pack, the control unit can accurately control the fire-fighting equipment in the battery pack corresponding to the fire to start extinguishing. The damage of open fire and fire extinguishing agent to equipment is reduced, and the influence on the environment is reduced.

In some embodiments, the control unit is configured to output a control signal to the battery management unit to control the battery management unit to fire the enable line. One implementation is provided.

In some embodiments, the energy storage system further comprises an auxiliary source; the auxiliary source is connected with the control unit and the starting line; the control unit is used for outputting a control signal to the auxiliary source and controlling the auxiliary source ignition start line. One implementation is provided.

In a fourth aspect of embodiments of the present application, there is provided an electric vehicle, including the energy storage system of any one of the third aspects and an on-board charger; the vehicle-mounted charger is connected with the energy storage system and used for charging the energy storage system.

Drawings

Fig. 1A is a schematic structural diagram of a fire-fighting equipment according to an embodiment of the present application;

FIG. 1B is a schematic view of another fire-fighting equipment according to an embodiment of the present application;

FIG. 2A is a schematic structural view of yet another fire-fighting equipment according to an embodiment of the present application;

fig. 2B is a schematic structural diagram of a first mounting seat according to an embodiment of the present application;

FIG. 2C is a schematic view of another fire-fighting equipment according to an embodiment of the present application;

fig. 3A is a schematic structural diagram of another first mounting seat according to an embodiment of the present disclosure;

FIG. 3B is a schematic view of another fire-fighting equipment according to an embodiment of the present application;

Fig. 4A is a schematic structural diagram of still another first mounting seat according to an embodiment of the present disclosure;

FIG. 4B is a schematic view of another fire-fighting equipment according to an embodiment of the present application;

FIG. 4C is a schematic view of another fire-fighting equipment according to an embodiment of the present application;

FIG. 5A is a schematic view of a fire-fighting equipment according to an embodiment of the present application;

FIG. 5B is a schematic view of another fire-fighting equipment according to an embodiment of the present application;

FIG. 5C is a schematic view of another fire-fighting equipment according to an embodiment of the present application;

fig. 5D is a schematic structural diagram of a second chamber according to an embodiment of the present disclosure;

FIG. 6A is a schematic structural view of yet another fire-fighting equipment according to an embodiment of the present application;

FIG. 6B is a schematic structural view of yet another fire-fighting equipment according to an embodiment of the present application;

FIG. 7A is a schematic view of a fire-fighting equipment according to an embodiment of the present application;

FIG. 7B is a schematic view of another fire-fighting equipment according to an embodiment of the present application;

fig. 8A is a schematic structural diagram of a battery pack according to an embodiment of the present disclosure;

fig. 8B is a schematic structural view of another battery pack according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of an energy storage system according to an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments.

Hereinafter, in the embodiments of the present application, the terms "first", "second", and the like are used for descriptive convenience only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the embodiments of the present application, "upper", "lower", "left" and "right" are not limited to the orientation in which the components are schematically disposed in the drawings, and it should be understood that these directional terms may be relative concepts, which are used in relation to the description and clarity, which may be varied accordingly to the orientation in which the components are disposed in the drawings.

In the present embodiments, the term "comprising" is to be interpreted as an open, inclusive meaning, i.e. "comprising, but not limited to", throughout the specification and claims, unless the context requires otherwise. In the description of the present specification, the terms "one embodiment," "some embodiments," "example embodiments," "exemplary," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

In describing some embodiments, expressions of "coupled" and "connected" and their derivatives may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact with each other. As another example, the term "coupled" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact. However, the term "coupled" may also mean that two or more elements are not in direct contact with each other, but yet still co-operate or interact with each other. The embodiments disclosed herein are not necessarily limited to what is described herein.

In the embodiment of the present application, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Exemplary implementations are described in the examples herein with reference to cross-sectional and/or plan views and/or equivalent circuit diagrams as idealized exemplary figures. In the drawings, the thickness of layers and regions are exaggerated for clarity. Thus, variations from the shape of the drawings due to, for example, manufacturing techniques and/or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of example embodiments.

At present, most of new energy vehicles use lithium ion batteries as energy storage devices, but the lithium ion batteries still have many technical problems as energy storage devices, for example: in the use process of the lithium ion battery, the volume of the battery expands to different degrees due to various reasons such as phase change, particle accumulation mode, accumulation of side reaction products, gas production and the like. Particularly, lithium ion batteries in an electric vehicle are arranged in groups, the accumulation of volume expansion of a plurality of batteries can generate stress on a fixing device in a module, and when the stress accumulation is overlarge, the fixing device of the module can be damaged, so that failure and safety risks are brought. For example, the spontaneous ignition and explosion of lithium ion batteries can cause serious safety problems. Therefore, how to accurately and rapidly extinguish fire, and avoiding serious harm is one of the important concerns of new energy automobiles.

The scheme adopted in the current industry is centralized fire control, and a pipe network type fire extinguisher or a gas cylinder type fire extinguisher is adopted to extinguish the fire of the battery pack so as to extinguish the fire source rapidly and timely. That is, a fire extinguisher is used to extinguish a plurality of battery packs in a non-targeted, blanket-type manner. However, in this way, firstly, the pipe network type fire extinguisher or the gas cylinder type fire extinguisher has limited application in the embedded lithium battery or the distributed energy storage scene due to the factors of complex design, periodic maintenance and the like. Secondly, centralized fire control is not pertinence, and fire control medicament coverage area is great when putting out a fire, leads to fire control medicament to cause the influence to peripheral equipment.

The embodiment of the application is based on that above-mentioned fire extinguisher adaptability is low, and the problem that fire extinguishing accuracy is low proposes, proposes a new fire extinguisher that is applicable to among embedded lithium electricity or the distributed scene to install the fire extinguisher alone in every battery package, so that accurate put out a fire to the battery package.

Embodiments of the present application provide a fire-fighting apparatus, or may be understood as a fire extinguisher. The fire-fighting equipment can be applied to a battery pack or other structures needing fire-fighting storage, and can also be used independently.

As shown in fig. 1A, the fire-fighting equipment 1 includes a first cavity 10, a second cavity 20, and an activation line 30. Fire extinguishing agent is stored in the first cavity 10, and gas generating agent is stored in the second cavity 20.

The working principle of the fire-fighting equipment 1 is as follows: the gas is generated after the gas generating agent in the second cavity 20 is ignited by the starting line 30, and the gas in the second cavity 20 is sprayed into the first cavity 10 by the second cavity 20 to increase the pressure of the first cavity 10, so that the fire extinguishing agent in the first cavity 10 is sprayed out.

The first chamber 10 is a sealed chamber, and fire extinguishing agent (not shown in fig. 1A) is stored in the first chamber 10.

The shape of the first cavity 10 is not limited, and the first cavity 10 can be reasonably set according to the application scene of the fire-fighting equipment 1.

In some embodiments, the first cavity 10 is applied in a battery pack, the first cavity 10 matching the shape of the battery pack. The battery pack is rectangular block-shaped, and the first cavity 10 is also rectangular. The first cavity 10 is, for example, a cuboid.

In some embodiments, when the material of the first cavity 10 is selected, the first cavity 10 is ensured not to react with the fire extinguishing agent stored in the first cavity 10, so as to ensure long-term storage of the fire extinguishing agent by the first cavity 10.

In some embodiments, the material of the first cavity 10 is a material that meets at least one of high temperature resistance (e.g., the melting point of the material of the first cavity 10 is greater than or equal to 800 ℃), impact resistance, or corrosion resistance.

The material of the first cavity 10 is, for example, metal. For example, the material of the first chamber 10 is a refractory metal such as tungsten, molybdenum, tantalum, niobium, vanadium, chromium, titanium, zirconium, stainless steel, aluminum, or the like.

Alternatively, the material of the first cavity 10 is illustratively a nonmetallic compound. For example, the material of the first cavity 10 is boride, carbide, nitride, silicide, phosphide, sulfide, or the like of a rare earth metal.

Alternatively, the material of the first cavity 10 is illustratively a non-intermetallic compound. For example, the material of the first cavity 10 is boron carbide, silicon carbide, boron nitride, silicon nitride, boron phosphide, silicon phosphide, or the like.

By making the material constituting the first cavity 10 be a high temperature resistant, impact resistant and corrosion resistant material, the first cavity 10 can ensure long-term storage of fire extinguishing agent, high temperature resistance under the battery pack working environment and impact resistance under the application scene of the battery pack.

In some embodiments, the fire extinguishing agent may include one or more of a liquid fire extinguishing agent, a gaseous fire extinguishing agent, a dry powder fire extinguishing agent, or a foam fire extinguishing agent.

Exemplary fire extinguishing agents are carbon dioxide, haloalkanes, aerosols, foams, dry powders, perfluorinated hexanones or fluorinated ketones, and combinations thereof.

As to the second cavity 20 in the fire-fighting equipment 1, as shown in fig. 1A, the second cavity 20 is a sealed cavity, and the gas-generating agent 21 is stored in the second cavity 20.

The material of the second cavity 20 may be metallic or non-metallic. For example, the material of the second cavity 20 is metal, plastic, fiberglass, tetrafluoroethylene, etc. Of course, the material of the second cavity 20 may be the same as that of the first cavity 10.

In some embodiments, the gas generating agent may include, for example, an aerosol or a powder, or the like.

The shape of the second cavity 20 is not limited in this embodiment, and in some embodiments, the second cavity 20 is located outside the first cavity 10.

In some embodiments, the second cavity 20 is smaller than the first cavity 10, and the second cavity 20 is at least partially disposed within the first cavity 10.

Illustratively, in some embodiments, as shown in fig. 1A, the second cavity 20 is disposed within the first cavity 10.

Wherein, optionally, the second cavity 20 is fixedly connected with the first cavity 10. For example, the second chamber 20 is fixedly connected to the first chamber 10 by welding, bonding, caulking, stapling, clamping, fitting connection, expansion bolt connection, or the like.

Through with second cavity 20 and first cavity 10 fixed connection, can avoid second cavity 20 to rock to avoid leading to second cavity 20 and first cavity 10 internal pressure to increase because of second cavity 20 rocks, and then lead to fire-fighting equipment mistake blowout extinguishing agent's problem.

In other embodiments, as shown in fig. 1B, the second cavity 20 is partially disposed in the first cavity 10, and partially extends out of the first cavity 10.

The second cavity 20 extends out of the first cavity 10, illustratively through a through hole in the first cavity 10.

In some embodiments, in case the second cavity 20 protrudes out of the first cavity 10, a sealing contact of the second cavity 20 with the first cavity 10 should be ensured.

For example, a sealant is provided at a position where the second cavity 20 contacts the first cavity 10 to ensure sealing contact of the second cavity 20 with the first cavity 10. Alternatively, welding is performed at the position where the second cavity 20 contacts the first cavity 10 to ensure sealing contact of the second cavity 20 with the first cavity 10.

Optionally, the second cavity 20 is fixedly connected with the first cavity 10.

The second chamber 20 is, for example, fixedly connected directly to the first chamber 10 by means of welding, bonding, riveting, stapling, clamping, fitting connection, expansion screw connection, etc.

Alternatively, as illustrated in fig. 2A, the second cavity 20 is fixedly connected to the first cavity 10 through the first mount 50.

That is, the second cavity 20 is fixedly connected with the first mount 50, and the first mount 50 is fixedly connected with the first cavity 10, thereby realizing the fixed connection of the second cavity 20 and the first cavity 10.

In some embodiments, as shown in fig. 2A, the fire-fighting equipment 1 further includes a first mounting seat 50, where the first mounting seat 50 is disposed outside the first cavity 10 and is fixedly connected with the first cavity 10. A portion of the second cavity 20 extends out of the first cavity 10 and is fixedly connected to the first mounting seat 50.

Wherein the material of the first mount 50 may be the same as the material of the first chamber 10. For example, the material of the first mount 50 is metal.

The first mount 50 and the first chamber 10 may be fixedly connected by welding, bonding, riveting, stapling, clamping, fitting, expansion bolt connection, or the like.

Regarding the structure of the first mount 50, in some embodiments, as shown in fig. 2B, the first mount 50 is annular.

Of course, the specific shape of the ring is not limited, and the shape of the ring in the first mount 50 may be matched with the shape of the second cavity 20. For example, the shape of the inner ring of the first mounting seat 50 is concentric with the shape of the outline of the second cavity 20, and the shape is the same.

By arranging the first mounting seat 50 in a ring shape, when the second cavity 20 is fixedly connected with the first mounting seat 50, as shown in fig. 2A, the second cavity 20 may extend out of the first mounting seat 50, as shown in fig. 2C, and the second cavity 20 may not extend out of the first mounting seat 50. Therefore, the first mounting seat 50 is annular, the requirement on the matching degree of the structures of the second cavity 20 and the first mounting seat 50 is low, the limiting condition on the connection mode of the second cavity 20 and the first mounting seat 50 is less, and the application range is wide.

In this case, the second cavity 20 is screwed with the first mount 50 in such a manner that the second cavity 20 is connected with the first mount 50, for example.

For example, the inner ring of the first mounting seat 50 is formed with an internal thread, and the portion of the second cavity 20 extending out of the first cavity 10 is formed with an external thread, and the second cavity 20 is screwed with the first mounting seat 50.

Alternatively, the second cavity 20 is illustratively in interference fit connection with the first mount 50.

For example, the portion of the second cavity 20 extending out of the first cavity 10 is tapered, and the second cavity 20 extends into the first mount 50 for interference fit connection.

Alternatively, the second cavity 20 is illustratively snap-connected to the first mount 50.

Alternatively, the second cavity 20 is illustratively connected back-off to the first mount 50.

Alternatively, the second cavity 20 is illustratively welded to the first mount 50.

Alternatively, the second cavity 20 is illustratively bonded to the first mount 50.

Of course, the manner of connecting the second cavity 20 and the first mounting seat 50 is only illustrative, and is not limited in any way.

In other embodiments, as shown in fig. 3A, the first mount 50 is a block-shaped structure.

Similarly, the specific shape of the block structure is not limited.

By providing the first mount 50 in a block-like configuration, the requirements on the shape matching of the first mount 50 and the second cavity 20 may be reduced. On the one hand, the shape of the first mounting seat 50 is not required, and the preparation difficulty of the first mounting seat 50 can be reduced. On the other hand, the shape of the second chamber 20 is not required, and the present invention is applicable to any shape of the second chamber 20.

In this case, as shown in fig. 3B, the second cavity 20 and the first mount 50 may be fixedly connected by welding, bonding, riveting, stapling, clamping, or the like, for example.

In still other embodiments, as shown in fig. 4A, the first mount 50 is an open cavity structure. That is, the first mount 50 includes a cavity floor 51.

Similarly, the specific shape of the open cavity is not limited, and the shape of the cavity of the first mounting seat 50 may be matched with the shape of the second cavity 20. For example, the shape of the cavity of the first mounting seat 50 is concentric with the shape of the contour of the second cavity 20, and the shape is the same.

As shown in fig. 4B and 4C, the opening of the first mount 50 is disposed towards the first cavity 10, and the first mount 50 is fastened to the first cavity 10.

Through setting up first mount pad 50 as open cavity structure, first mount pad 50 is connected with first cavity 10 lock, and the cavity of first mount pad 50 communicates with the through-hole on the first cavity 10 for first mount pad 50 constitutes a seal structure with first cavity 10. Therefore, compared with the first cavity 10 having a ring shape, the first mounting seat 50 having an open cavity structure can further seal the first cavity 10 and the second cavity 20.

It should be understood that the second cavity 20 may not be connected to the first cavity 10, which is not limited in the embodiment of the present application.

In some embodiments, as shown in fig. 2C and 4C, a first seal 22 is also disposed within the second cavity 20. The gas generating medicament 21 is located between the first seal 22 and the first side wall 23 of the second cavity 20.

As shown in fig. 2C and fig. 4C, the first side wall 23 is disposed opposite to the second side wall 24, the first side wall 23 is located in the first cavity 10, and the second side wall 24 is located outside the first cavity 10.

The first seal 22 may be, for example, a sealing plug, a sealing flap, a dispensing, a metal clip + sealing ring, or the like.

Because the second side wall 24 is located outside the first cavity 10, the first sealing member 22 is disposed in the second cavity 20, and the first sealing member 22 is located between the second side wall 24 and the gas generating agent 21, so that the first sealing member 22 can further seal the gas generating agent 21, thereby avoiding the problems that the gas generating agent cannot be sprayed due to moisture in the outside. That is, the second chamber 20 can be sealed from the outside by providing the first sealing member 22.

With respect to the activation line 30 in the fire apparatus 1, as shown in fig. 1A, the activation line 30 extends into the second cavity 20, contacts the gas generating agent 21, and is used to ignite the gas generating agent to generate gas.

In some embodiments, the actuation wire 30 extends from outside the first cavity 10 into the second cavity 20, and if the actuation wire 30 is required to pass through the side walls of the first cavity 10 and the second cavity 20, the actuation wire 30 is in sealing contact with the side walls of the first cavity 10 and the second cavity 20.

That is, in some embodiments of the present application, the actuation wire 30 is in sealing contact with the first cavity 10 and the second cavity 20.

In some embodiments, as shown in fig. 1A, the second cavity 20 does not extend beyond the first cavity 10, and the firing line 30 passes through the sidewalls of the first cavity 10 and the second cavity 20 to contact the gas-generating agent 21.

Then the actuation wire 30 should be in sealing contact with both the side wall of the first cavity 10 and the side wall of the second cavity 20. For example, the sealing contact of the actuation wire 30 with the first and

second chambers

10 and 20 may be achieved by providing a sealant at a position where the actuation wire 30 contacts the sidewalls of the first and

second chambers

10 and 20.

In other embodiments, as shown in fig. 2A, the second cavity 20 extends out of the first cavity 10, but the first mounting seat 50 is of an open structure, and the first sealing member 22 is not disposed in the second cavity 20, and the actuation wire 30 passes through a sidewall of the second cavity 20 and contacts the gas generating agent 21.

Then the actuation wire 30 should be in sealing contact with both the sidewalls of the second cavity 20 to achieve a sealing contact of the actuation wire 30 with the first cavity 10 and the second cavity 20.

In still other embodiments, as shown in fig. 2C, the second cavity 20 extends out of the first cavity 10, but the first mount 50 is of an open structure, and the first seal 22 is disposed within the second cavity 20. The actuation wire 30 extends from the second side wall 24 of the second cavity 20 into the second cavity 20 through the first seal 22 into contact with the gas-generating medicament 21.

Then, the actuation wire 30 should be in sealing contact with at least one of the second sidewall 24 of the second cavity 20 and the first seal 22 to achieve sealing contact of the actuation wire 30 with the first cavity 10 and the second cavity 20.

In still other embodiments, as shown in fig. 4B, the second cavity 20 extends out of the first cavity 10, the first mount 50 includes a cavity bottom 51, and the activation wire 30 passes through the cavity bottom 51 of the first mount 50, extends into the second cavity 20 from the second sidewall 24 of the second cavity 20, and contacts the gas-generating agent 21.

The actuation wire 30 should then be in sealing contact with at least one of the cavity bottom 51 of the first mount 50 or the second side wall 24 of the second cavity 20 to achieve sealing contact of the actuation wire 30 with the first cavity 10 and the second cavity 20.

In yet other embodiments, as shown in fig. 4C, the second cavity 20 extends out of the first cavity 10, the first mount 50 includes a cavity bottom 51, and the first seal 22 is disposed within the second cavity 20. The actuation wire 30 extends through the bottom 51 of the first mount 50 from the second side wall 24 of the second cavity 20 into the second cavity 20 and through the first seal 22 into contact with the gas generant 21.

The actuation wire 30 should then be in sealing contact with at least one of the cavity bottom 51 of the first mount 50, the second side wall 24 of the second cavity 20, or the first seal 22 to achieve sealing contact of the actuation wire 30 with the first cavity 10 and the second cavity 20.

In some embodiments, the activation line 30 comprises a thermo-sensitive line.

When the temperature of the environment where the fire-fighting equipment 1 is located exceeds the ignition point of the thermosensitive line, the thermosensitive line can be natural so as to realize the active starting of the fire-fighting equipment 1.

In other embodiments, the initiation line 30 includes an ignition head.

When the fire-fighting equipment 1 is judged to be on fire in the environment, the ignition head is subjectively controlled to ignite, so that the passive starting of the fire-fighting equipment 1 is realized, and the false starting of the fire-fighting equipment 1 is avoided.

In still other embodiments, the activation line 30 includes both a heat sensitive line and an ignition head.

Therefore, the fire-fighting equipment 1 has the functions of active starting and passive starting, and once the passive starting control system fails, the thermosensitive wire capable of being actively started can also ensure the normal use of the fire-fighting equipment 1 and ensure the performance of the fire-fighting equipment 1.

As can be seen from the above working principle of the fire-fighting equipment 1, the gas is generated after the starting line 30 ignites the gas-generating agent in the second cavity 20, and the second cavity 20 sprays the gas inside the second cavity into the first cavity 10.

Thus, in some embodiments, as shown in fig. 5A, the second cavity 20 further includes a pressure relief vent, which communicates with the interior of the second cavity 20 to form a sealed structure. The pressure relief opening is used for spraying the gas in the second cavity 20 to the first cavity 10.

In some embodiments, the chamber wall of the second chamber 20 includes a first portion 25 and a second portion 26 that are sealingly connected. The first portion 25 is a pressure relief vent.

When the second cavity 20 is located outside the first cavity 10, the pressure relief port may be in communication with the first cavity 10 through a structure such as a pipe.

When the second cavity 20 is at least partially disposed in the first cavity 10, the pressure relief port is located in the first cavity 10.

For example, the pressure relief opening (the first portion 25) of the second cavity 20 is a first pressure relief membrane, the second portion 26 is a metal or nonmetal membrane, and the pressure relief opening and the second portion 26 are in sealing connection, so as to ensure that the second cavity 20 is a sealed cavity.

The working principle of the pressure release diaphragm is as follows: the pressure release membrane is generally made of a brittle material, and when the pressure in the second cavity 20 exceeds the set pressure, the pressure release membrane will rupture to release the gas generating agent in the second cavity 20.

The material of the pressure release film may include, for example, aluminum foil, thin aluminum plate, rubber sheet, film (X-ray film, celluloid film), organic glass sheet, and the like.

The specific position of the first pressure release membrane in the cavity wall is not limited in the embodiment of the present application, and only needs to be located in the first cavity 10.

In some embodiments, as shown in fig. 5A, the pressure relief vent (first portion 25) is located on a side wall of the second chamber 20 that intersects the first side wall 23.

In other embodiments, to facilitate connection of the first portion 25 and the second portion 26, as shown in fig. 5B, the pressure relief vent (first portion 25) acts as the first sidewall 23 of the second chamber 20.

Regarding the manner in which the first portion 25 and the second portion 26 are sealingly connected, the first portion 25 and the second portion 26 may be sealingly connected by bonding, end-face sealing, or the like.

In some embodiments, as shown in fig. 5C, the second cavity 20 further comprises a first sealing ring 27 and a first connector 28.

Opposite sides of the first sealing ring 27 are in contact with the first pressure relief diaphragm (first portion 25) and the second portion 26, respectively. The first connecting piece 28 is located at the side of the first pressure release diaphragm away from the first sealing ring 27 and is fixedly connected with the second portion 26.

The first sealing ring 27 may be, for example, a sealing ring, a gasket, a dispensing ring, or the like.

It will be appreciated that the first connector 28 should be annular as shown in fig. 5D. That is, the bottom of the first connecting member 28 has an opening exposing the first pressure release membrane, so as to ensure that the gas generating agent in the second cavity 20 can be ejected when the first pressure release membrane is ruptured. For example, the first connector 28 is a spacer ring.

Regarding the manner in which the first connector 28 is fixedly coupled to the second portion 26, in some embodiments, the first connector 28 is threadably coupled to the second portion 26.

Alternatively, in other embodiments, the first connector 28 (e.g., a cap) is sleeved over the exterior of the second portion 26 to provide an interference fit connection with the second portion 26.

Alternatively, in other embodiments, the first connector 28 (e.g., a rubber plug) extends into the interior of the second portion 26 to provide an interference fit connection with the second portion 26.

Alternatively, in still other embodiments, the first connector 28 is welded to the second portion 26.

Alternatively, in still other embodiments, the first connector 28 is bonded to the second portion 26.

Of course, the above connection manner is only an illustration, and is not limited in any way.

The first portion 25 is attached to the second portion 26 by fixedly connecting the first connecting member 28 to the second portion 26, and the presence of the first seal ring 27 enhances the sealing of the connection between the first portion 25 and the second portion 26. Thereby effecting a sealed connection of the first portion 25 with the second portion 26.

According to the working principle of the fire-fighting equipment 1, after the gas generated after the gas-generating agent is ignited enters the first cavity 10, the pressure of the first cavity 10 is increased, and the fire-extinguishing agent in the first cavity is sprayed out, so that the fire can be extinguished.

Thus, in some embodiments, as shown in fig. 1A, the first cavity 10 further includes a firing port 11, and the firing port 11 communicates with the interior of the first cavity 10 to form a sealing structure. The spraying port 11 is used for spraying the fire extinguishing agent in the first cavity 10 after the gas generated after the gas generating agent is ignited enters the first cavity 10.

In some embodiments, as shown in fig. 6A, the portion of the firing port 11 that protrudes from the second chamber 10 is on the same side of the first chamber 10.

That is, in the case where the fire apparatus 1 further includes the first mount 50, the first mount 50 is located on the same side of the first chamber 10 as the fire ejection port 11.

In other embodiments, as shown in fig. 6B, the portion of the firing port 11 extending from the second chamber 10 may not be on the same side of the first chamber 10.

Regarding the structure of the firing port 11, in some embodiments, as shown in fig. 7A, the firing port 11 is a pressure relief valve.

The working principle of the pressure release valve is as follows: and when the pressure in the equipment exceeds the set pressure of the pressure relief valve, automatically opening the pressure relief. When the pressure release valve is opened, the fire extinguishing agent in the first cavity 10 is sprayed out in a proper manner.

The relief valve may be, for example, a spring-type relief valve, a lever-type relief valve, or a pulse-type relief valve (also referred to as a pilot-type relief valve).

The pulse type pressure release valve consists of a main pressure release valve and an auxiliary valve, when the pressure of the fire extinguishing agent in the first cavity 10 exceeds a specified pressure value, the auxiliary valve is firstly opened, the fire extinguishing agent enters the main pressure release valve along the guide pipe, and the main pressure release valve is opened, so that the pressure of the heightened fire extinguishing agent is reduced.

The pulse pressure release valve is adopted, so that the pulse spraying of the fire extinguishing agent can be realized. The pulse burst can enhance the fire extinguishing efficiency and increase the pulse blow-out effect. Moreover, the pulse burst can enable a small amount of fire extinguishing agent to be uniformly distributed in a larger space range, so that the defect of insufficient concentration of the fire extinguishing agent is prevented.

In this case, regarding the manner in which the pressure relief valve is in sealed communication with the interior of the first cavity 10, in some embodiments, the fire-fighting equipment 1 further includes a second mount 60, the second mount 60 being fixedly connected to the first cavity 10, the pressure relief valve being fixedly connected to the second mount 60, thereby effecting a fixed connection of the pressure relief valve to the first cavity 10.

The structure of the second mounting seat 60 is not limited, and the second mounting seat is matched with the structure of the pressure release valve. The connection manner of the second mounting seat 60 and the first cavity 10 may refer to the connection manner of the first mounting seat 50 and the first cavity 10. The connection manner of the pressure release valve and the second mounting seat 60 may refer to the connection manner of the first mounting seat 50 and the second cavity 20.

In some embodiments, a sealing ring, gasket or sealant is also provided between the pressure relief valve and the first chamber 10. To promote the sealing effect between the relief valve and the first chamber 10.

With respect to the structure of the firing port 11, in other embodiments, as shown in fig. 7B, the firing port 11 is a second pressure relief membrane.

The working principle of the pressure release diaphragm is as follows: the pressure release membrane is generally made of a brittle material, and when the pressure in the first cavity 10 exceeds a set pressure, the pressure release membrane is broken to release the fire extinguishing agent in the first cavity 10.

In this case, with respect to the manner in which the second pressure relief diaphragm is in sealed communication with the interior of the first cavity 10, in some embodiments, the fire apparatus 1 further includes a second sealing ring 41 and a second connector 42.

Opposite sides of the second sealing ring 41 are in contact with the second pressure relief diaphragm and the first chamber 10, respectively. The second connecting piece 42 is located on one side of the second pressure release diaphragm away from the second sealing ring 41, and the second connecting piece 42 is fixedly connected with the first cavity 10.

It will be appreciated that the second connector 42 should be annular, exposing the second pressure relief membrane to ensure that the fire suppression agent may be ejected from the second pressure relief membrane. The second connection 42 may be, for example, a compression ring.

The connection manner of the second connecting piece 42 and the first cavity 10 is not limited in this embodiment, and reference may be made to the connection manner of the first connecting seat 50 and the first cavity 10.

After the second connecting piece 42 is fixedly connected with the first cavity 10, the second pressure release diaphragm is fixed between the second connecting piece 42 and the first cavity 10, so that the second pressure release diaphragm is in sealing connection with the first cavity 10 through the second sealing ring 41.

In some embodiments, the fire apparatus 1 further comprises a plastic protective cover disposed on a side of the fire ejection port 11 remote from the first cavity 10.

It should be understood that the plastic protection cover is arranged outside the spraying opening 11, and that the plastic protection cover should be directly sprayed by the fire extinguishing agent when the fire extinguishing agent is sprayed from the spraying opening.

The plastic protective cover may be, for example, a plastic film or a plastic cover for protecting the firing port 11 (e.g., the pressure relief valve or the second pressure relief diaphragm) from damage to the firing port 11.

As can be seen from the above description, in some embodiments, the fire-fighting equipment 1 provided in the embodiments of the present application should be a sealing structure, and any two components should be in sealing contact, so as to ensure that the gas-generating agent and the fire-extinguishing agent do not leak.

The working principle of the fire-fighting equipment 1 provided by the embodiment of the application is as follows: the starting line 30 is used for igniting the gas generating agent 21, the gas is generated after the starting line 30 ignites the gas generating agent 21, and the air pressure in the second cavity 20 is increased. The pressure relief vent is configured to rupture (e.g., from the first pressure relief membrane) upon ignition of the gas generant composition 21 to rupture the gas within the second chamber 20 to the first chamber 10. The air pressure in the first cavity 10 is increased, and the spraying opening 11 is used for spraying the fire extinguishing agent (for example, spraying after the second pressure release film is broken or spraying after the pressure release valve is opened) in the first cavity 10 after the air enters the first cavity 10, so as to realize rapid fire extinguishing.

The fire-fighting equipment 1 provided by the embodiment of the application is simple in working principle, simple in structure, free of periodic maintenance, low in requirement on application scenes, applicable to any scene and wide in application range.

Based on this, this application embodiment still provides a battery Package (PACK), is applied to the battery package with above-mentioned fire-fighting equipment 1 to realize the accurate fire extinguishing to the battery package, can avoid extinguishing agent to cause the influence to other equipment.

As shown in fig. 8A, the battery pack 2 includes at least one battery cell 60, the fire-fighting equipment 1 described above, and a battery management unit (battery management unit, BMU).

In the case where the battery pack 2 includes a plurality of the battery cells 60, the plurality of battery cells 60 may be connected in series or in parallel, and the plurality of battery cells 60 may be arranged in a stacked manner.

The BMU is, for example, a power or sampling board for controlling the power supplied by the battery cell 60. The fire-fighting equipment 1 is used for being started in case of fire of the battery pack 2 to spray fire extinguishing agent.

In some embodiments, the activation line 30 in the fire-fighting device 1 is a heat-sensitive line, and the fire-fighting device 1 is actively activated to eject the fire-extinguishing agent after the temperature of the battery pack 2 exceeds the ignition point of the heat-sensitive line.

In other embodiments, the initiation line 30 in the fire apparatus 1 is an ignition head. As shown in fig. 8A, the BMU is also connected to the fire-fighting equipment 1 for igniting the start line 30 in the fire-fighting equipment 1.

That is, the BMU is connected to the start line 30, and outputs a start current to the start line 30 (i.e., takes electricity from the battery pack 2) to ignite the start line 30 when the battery pack 2 fires.

Of course, the activation line 30 may also be ignited by other means (e.g., an auxiliary source or a self-contained power supply of the fire-fighting equipment 1), just to name a few.

The scheme of controlling the starting of the fire-fighting device 1 by the BMU passively has higher precision and quick response.

In some embodiments, as shown in fig. 8B, the battery pack 2 further includes a detector 70, and the detector 70 is configured to output a signal when the environment of the battery pack 2 is abnormal.

The detector 70 can detect the temperature, smoke, gas, radiation intensity or liquid in the battery pack 2 to output signals when the phenomena of cell valve opening, liquid leakage, thermal runaway, BMU carbonization, wire harness and plastic structure combustion and the like occur.

The battery pack 2 provided in the embodiment of the present application may transmit a signal to the BMU after the detector 70 detects an environmental abnormality, and the BMU directly ignites the start line 30 to extinguish the fire. After detecting an environmental abnormality, whether or not there is an open fire may be detected, and the start line 30 may be ignited after detecting the open fire.

According to the embodiment of the application, the fire-fighting equipment 1 is arranged in the battery pack 2, and when the battery pack 2 fires, the fire-fighting equipment 1 in the battery pack 2 can extinguish the fire of the battery pack 2. On the one hand, the fire-fighting equipment 1 is directly packaged inside the battery pack 2, can extinguish fire from the inside to the battery pack 2, and has better fire-extinguishing effect. On the other hand, the fire-fighting equipment 1 has strong pertinency, and only the battery pack 2 to which the fire-fighting equipment belongs is subjected to fire extinguishment, so that the fire-extinguishing agent has little damage to other devices.

It should be noted that, the battery pack 2 provided in the embodiment of the present application may be applied not only to the above electric vehicle, but also to a lithium ion battery energy storage system such as a base station energy storage system, a data center standby energy storage system, an uninterruptible power supply (uninterruptible power system, UPS) or an energy storage power station.

Next, a description will be given of how to re-ignite the start line 30 after detecting an open fire when the battery pack 2 provided in the embodiment of the present application is applied to an energy storage system.

The embodiment of the present application provides an energy storage system, as shown in fig. 9, where the energy storage system 3 includes at least one battery pack 2 (fig. 9 illustrates a plurality of battery packs 2 as an example), a flame detector 80, and a control unit 90.

The detector 70 in the battery pack 2 is used to determine whether the battery pack 2 is abnormal by detecting the temperature, smoke, gas, radiation intensity, etc. in the battery pack 2, and in the case where the battery pack 2 is abnormal, output a signal to the control unit 90.

The detector 70 may directly output a signal to the control unit 90, or may transmit the signal to the BMU, which in turn transmits the signal to the control unit 90.

The control unit 90 is connected to the battery pack 2 and the flame detector 80 for controlling the activation of the flame detector 80 upon receiving a signal from the detector 70.

The flame detector 80 is used for detecting whether an open flame is generated in the energy storage system 3, and outputs a signal to the control unit 90 when the open flame is detected.

After receiving the signal output from the flame detector 80, the control unit 90 controls the ignition line 30 to ignite, and the fire-fighting equipment 1 starts extinguishing fire.

That is, in the energy storage system provided in the embodiment of the present application, after the detector 70 inside the battery pack 2 detects that the battery pack 2 is abnormal, the location is reported to the system, and then after the flame detector 80 detects an open fire, the fire-fighting equipment 1 in the battery pack 2 that fires is accurately controlled by the control unit 90 to start up, so as to achieve accurate fire extinguishing.

Regarding the manner in which control unit 90 controls ignition of start line 30, in some embodiments, the BMU is connected to start line 30, and control unit 90 outputs a control signal to the BMU that ignites start line 30.

In other embodiments, the energy storage system 3 further includes an auxiliary source connected to the activation line 30, the control unit 90 outputting a control signal to the auxiliary source, the auxiliary source igniting the activation line 30.

In still other embodiments, the fire apparatus further includes a self-contained power supply unit connected to the initiation line 30, the control unit 90 outputting a control signal to the self-contained power supply unit, the self-contained power supply unit igniting the initiation line 30.

The control unit 90 may include a battery pack management system (battery management system, BMS), an energy storage system monitoring, a brake control unit (brake control unit, BCU), a Micro Control Unit (MCU), a vehicle control unit (vehicle control unit, VCU), or the like, among others.

The energy storage system 3 provided in the embodiment of the application includes a battery pack 2 with a fire-fighting equipment 1, and after the detector 70 in the fire-fighting equipment 1 outputs a signal of abnormal environment of the battery pack 2, the control unit 90 controls the flame detector 80 to detect whether there is an open fire. When the flame detector 80 detects an open flame, the control unit 90 controls the fire-fighting equipment 1 in the battery pack 2 with abnormal environment to start extinguishing fire. Since the signal of the abnormal environment of the battery pack 2 is emitted from the battery pack 2, the control unit 90 can precisely control the fire-fighting equipment 1 in the battery pack 2 corresponding to the fire to start extinguishing the fire. The damage of open fire and fire extinguishing agent to equipment is reduced, and the influence on the environment is reduced.

After the energy storage system 3 is applied to an electric vehicle, the electric vehicle can be connected with an on-vehicle charger in the electric vehicle, and the energy storage system 3 can be charged through the on-vehicle charger.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A fire apparatus, comprising:

the fire extinguishing device comprises a first cavity, a second cavity and a third cavity, wherein the first cavity comprises a spray opening, and fire extinguishing agents are stored in the first cavity;

the second cavity comprises a pressure relief opening, and the pressure relief opening is communicated with the first cavity; the second cavity is internally stored with a gas-generating medicament;

the starting line stretches into the second cavity and contacts with the gas generating agent;

the gas-generating agent is used for generating gas by igniting the starting line, the pressure relief opening is used for spraying the gas in the second cavity to the first cavity, and the spraying opening is used for spraying the fire-extinguishing agent in the first cavity after the gas enters the first cavity.
The fire apparatus of claim 1, wherein at least a portion of the second cavity is disposed within the first cavity, the pressure relief vent being located within the first cavity.
The fire apparatus of claim 1 or 2, wherein the pressure relief vent is a first pressure relief diaphragm.
The fire apparatus of claim 3, wherein the second cavity further comprises a first sealing ring and a first connector;

opposite sides of the first sealing ring are respectively contacted with the first pressure release diaphragm and the second part;

The first connecting piece is located one side, away from the first sealing ring, of the first pressure relief diaphragm and is fixedly connected with the second cavity.
The fire apparatus of any one of claims 1-4, wherein a first seal is further disposed within the second cavity;

the gas generating agent is positioned between the first sealing piece and the first side wall of the second cavity, and the starting line extends into the second cavity from the second side wall of the second cavity and passes through the first sealing piece to be in contact with the gas generating agent;

the first side wall and the second side wall are arranged opposite to each other.
The fire apparatus of any one of claims 1-4, wherein the first sidewall of the second cavity is the pressure relief vent;

the starting line extends into the second cavity from the second side wall of the second cavity, and the first side wall and the second side wall are arranged opposite to each other.
The fire apparatus of any one of claims 1-6, wherein the second cavity is fixedly connected to the first cavity.
The fire apparatus of claim 7, further comprising a first mount; the first mounting seat is arranged outside the first cavity and fixedly connected with the first cavity;

The second cavity extends out of the first cavity and is fixedly connected with the first mounting seat.
The fire apparatus of claim 8, wherein the first mount is an open cavity structure;

the opening of the first mounting seat faces the first cavity, the second cavity stretches into the first mounting seat, and the starting line penetrates through the cavity bottom of the first mounting seat.
The fire apparatus of claim 8, wherein the first mount is on the same side of the first cavity as the firing port.
The fire apparatus of any one of claims 1-10, wherein the firing port is a pressure relief valve;

the fire-fighting equipment further comprises a second installation seat, wherein the second installation seat is fixedly connected with the first cavity, and the pressure release valve is fixedly connected with the second installation seat.
The fire apparatus of any one of claims 1-10, wherein the burst orifice is a second pressure relief membrane;

the fire-fighting equipment further comprises a second sealing ring and a second connecting piece;

opposite two surfaces of the second sealing ring are respectively contacted with the second pressure release diaphragm and the first cavity;

The second connecting piece is located the second pressure release diaphragm is kept away from second sealing ring one side, with first cavity fixed connection.
The fire apparatus of any one of claims 1-12, wherein the activation line comprises at least one of a heat sensitive line or an ignition head.
A battery pack comprising the fire apparatus of any one of claims 1-13 and at least one electrical cell;

the battery cell is used for supplying power; the fire-fighting equipment is used for spraying fire-extinguishing agent under the condition that the battery pack fires.
The battery pack of claim 14, wherein the battery pack further comprises a detector; the detector is used for outputting a signal when the environment of the battery pack is abnormal.
The battery pack of claim 15, further comprising a battery management unit coupled to an activation line in the fire apparatus for igniting the activation line.
An energy storage system, comprising: at least one battery pack, a control unit, and a flame detector; the control unit is respectively connected with the battery pack and the flame detector;

the battery pack according to any one of claims 14 to 16;

The control unit is used for controlling the flame detector to start when receiving the signal of the detector; the flame detector is used for outputting a signal to the control unit when an open flame is detected, and the control unit controls the starting line to ignite.
The energy storage system of claim 17, wherein the control unit is configured to output a control signal to a battery management unit to control the battery management unit to fire the activation line.
The energy storage system of claim 17, further comprising an auxiliary source;

the auxiliary source is connected with the control unit and the starting line;

the control unit is used for outputting a control signal to the auxiliary source to control the auxiliary source to ignite the starting line.
An electric vehicle comprising the energy storage system of any one of claims 17-19 and an onboard charger; the vehicle-mounted charger is connected with the energy storage system and used for charging the energy storage system.